While Romney has previously said that he's releasing the same level of tax information as Kerry did in 2004, the senator's office said by the time Kerry was running for president, he had already made public 20 years of tax information from previous Senate races-not two years' worth. That number included five years of tax returns released during his 2004 White House bid.

"As Sen. Moynihan once said, people are entitled to their own opinions, but they're not entitled to their own facts," Wade said. "Facts matter."